How to fix the script? , (hair morph remover and giver scripts)

When I'm using it one time, it removes the hair, but when I'm trying to put another hair it doesn't let me (the giver doesn't work after) Any suggestions to fix it?

function onTouched(hit) 
    local d = hit.Parent:GetChildren() 
    for i=1, #d do 
        if (d[i].className == "Model") then 
            d[i]:remove() 
        end 
    end
end 

script.Parent.Touched:connect(onTouched)